URL Redirection to Untrusted Site ('Open Redirect')
HCL iNotes is susceptible to a link to non-existent domain vulnerability. An attacker could use this vulnerability to trick a user into supplying sensitive information such as username, password, credit card number, etc.
CWE-601 - Open Redirect
An open redirect attack employs a URL parameter, HTML refresh tags, or a DOM based location change to exploit the trust of a vulnerable domain to direct the users to a malicious website. The attack could lead to higher severity vulnerabilities such as unauthorized access control, account takeover, XSS, and more.